FIG. 13. OctoberDecember 1999 Southern Hemisphere (a) stratospheric temperature
anomalies (shaded, °C) derived from the MSU channel 4 and 50-hPa height anomalies
(contours, m), (b) 50-hpa height (contours, m) and zonal wind speed (shaded, m s-1),
and (c) mean OctoberDecember 50-hPa height (contours, m) and zonal wind speed
(shaded, m s-1). Contour interval for height and height anomalies is 120 m.
Negative height anomalies in (a) are indicated by dashed contours. Anomalies are
departures from the 197998 base period means. (MSU data provided by the University
of Alabama in Huntsville.)